My experience interviewing with Capital One was pretty neutral. I would rank communication and timelines set by recruiter as a very positive experience. Compared to many other interviews I have done, the feedback after each out is given out pretty quick (with a few days). The power day however was a bit much. Back to back impersonal interviews, while the questions weren't hard, is very draining. The interviewers really don't take much time to get to know you or to talk about the role, they literally spend about 95% of the call drilling questions down your throat.